Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.6, Tugtainer allows an authenticated user to make the backend server send outbound HTTP requests to arbitrary user-supplied URLs through the notification test endpoint. The /settings/test_notification endpoint accepts a urls field and passes it directly to Apprise without restricting protocols, hostnames, localhost addresses, private IP ranges, or cloud metadata addresses.
This can be abused as an authenticated blind server-side request forgery (SSRF). This issue has been patched in version 1.30.6.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/Quenary/tugtainer/commit/c0294d0ab64985b135d0c5b566ac30bf837…
security-advisories@github.com
https://github.com/Quenary/tugtainer/releases/tag/v1.30.6
security-advisories@github.com
https://github.com/Quenary/tugtainer/security/advisories/GHSA-c2h5-ppv9-7vrq
security-advisories@github.com